CBSE Class 7 Answered
if a soil sample ‘X’ has 20% Water Holding capacity. I have poured water from the measuring cylinder having 100 ml water on 50 g of soil sample ‘Y’ till dripping. Water left in the cylinder is 80ml.
i. Calculate the percentage of water retained by soil sample ‘Y’.
ii. Which soil sample can be used to grow paddy?
Asked by anushkaavimalraji | 15 Nov, 2021, 08:47: PM
Expert Answer
(i) Initial volume of water = 100 ml
Final volume of water = 80 ml
Amount of soil sample = 50 g
Percentage of water absorbed/retained by soil sample = {(Initial volume of water -Final volume of water)/50} X 100
= {(100 - 80)/50} X 100
= {(20)/50} X 100
Percentage of water absorbed/retained by soil sample = 40 ml
(ii) Clay or clay loams are most suited for rice/paddy cultivation. Such soils are capable of holding water for long and sustain crop.
Answered by Sheetal Kolte | 17 Nov, 2021, 01:30: PM
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